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Yamaha DTXpress/DTXplorer/DTXtreme

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Re: help:clipping on powered speakers

2009-03-12 by Keith

Doug,

Two things you could do to reduce the bass:

1. make sure there is no bass boost on the DTXpress - utility menu EQ Lo=0

2. put an equaliser between the DTXpress and the amp.  I have a cheap & nasty Behringer 9 channel one - it works OK but is a horrible plastic thing (unlike the Xenyx mixer I have which is well built).

I don't think you have an equaliser on the amp, otherwise you could use that.

It is a while since I looked into clipping, but assuming things haven't changed much, the problem with clipping is that a nice low frequency sine wave gets the top chopped off.  This creates lots of high frequency harmonics which sound awful and blow up your tweeters.  With a bi-amped design that is less of a problem because the bass distortion cannot get to the tweeter.

If the clipping is not a sharp cut off, but "soft clipping" the waveform is more rounded, not as noticeable audibly and not as likely to blow anything up.

You may get some overheating of the amplifier or loudspeaker, although I would expect most amps to have a thermal trip in them.

So, if your DTXpress equaliser is already at zero, you could buy a separate one to reduce the bass a bit (or even reduce the kick volume in the kit setup) or play and keep your fingers crossed while saving up for that 1000W PA.  

Keith.

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